South Africa's parliament is to debate a vote of no confidence in President Jacob Zuma amid growing calls for him to resign.An anti-corruption probe last week raised allegations of misconduct against Mr Zuma.
But the ruling African National Congress (ANC) has said the motion "has no chance of succeeding".
This is the third time in less a year the president is facing a no confidence vote.
An investigation by the country's anti-corruption watchdog said a judicial inquiry should be set up to further investigate allegations of criminal activity in Mr Zuma's government.
The investigation found evidence that the Guptas, a business family with links to Mr Zuma, may have wielded undue political influence over the appointment of ministers.
Both Mr Zuma and the Guptas have denied any wrongdoing.
The main opposition Democratic Alliance (DA) brought the motion, accusing Mr Zuma of wreaking "havoc on our infant democracy".
"President Zuma's brand of corruption, economic mismanagement and lies can no longer continue to exist alongside the project of building a better South Africa," the party said in a statement.
But calls for the president to quit have been described as "premature" by ANC secretary general Gwede Mantashe who said the report had not found anyone guilty.